Testing LLX-424 for patients with kidney stones

A Phase 2a Randomized, Double-blind, Placebo-controlled Study of the Safety, Tolerability, Pharmacokinetics (PK), and Pharmacodynamic (PD) Effects of LLX-424 in Patients With a History of Kidney Stones

PHASE2 · Lilac Therapeutics, Inc. · NCT06932146

This study is testing a new medication called LLX-424 to see if it can help people who have had kidney stones feel better and prevent future stones.

Quick facts

PhasePHASE2
Study typeInterventional
Enrollment51 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorLilac Therapeutics, Inc. (industry)
Locations3 sites (Saint Paul, Minnesota and 2 other locations)
Trial IDNCT06932146 on ClinicalTrials.gov

What this trial studies

This Phase 2a study evaluates the safety and effectiveness of LLX-424, a glycolate oxidase inhibitor, in patients who have a history of kidney stones. Participants will be randomly assigned to receive either LLX-424 or a placebo for a duration of 8 weeks. The study aims to assess pharmacokinetics, pharmacodynamics, and overall tolerability of the drug. Follow-up visits will occur to monitor safety and health outcomes after treatment.

Who should consider this trial

Good fit: Ideal candidates include individuals with a documented history of calcium oxalate kidney stones and stable kidney function.

Not a fit: Patients with kidney stones of a type other than calcium oxalate or those with unstable kidney function may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce the recurrence of kidney stones in affected patients.

How similar studies have performed: While this approach is novel, similar studies targeting kidney stone prevention have shown promise, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* History of kidney stones documented in medical records
* 24-hour urine oxalate excretion
* Body mass index 18.5 to 38 kg/m2 inclusive
* Estimated glomerular filtration rate ≥ 60 mL/min/1.73m2

Exclusion Criteria:

* History or medical record evidence of kidney stones that are not calcium oxalate
* Unstable kidney function
* Spot urine protein to creatinine ratio ≥ 1 mg/mg at screening
* History of kidney transplantation
* Hemoglobin A1c \> 9.5% at screening
* History of enteric hyperoxaluria, intestinal malabsorption, bariatric surgery, intestinal surgery, inflammatory bowel disease
* History or evidence of cirrhosis

Where this trial is running

Saint Paul, Minnesota and 2 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Kidney Stones, oxalate, glycolate oxidase

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.